usgs

Table B4. Phytoplankton density and biomass, Crystal Lake Reservoir
[Density in cells per liter, biomass in micrograms per liter]

Date

9-4-97

9-4-97

9-4-97

9-11-97

7-14-98

7-21-98

8-4-98

8-10-98

8-18-98

9-1-98

9-9-98

9-15-98

9-21-98

1' below surface

3' above bottom

At 30'

1' below surface

Chlorophyta

   

Chlorella density

330,000

375,000

0

1,322,000

0

0

0

0

0

0

0

0

0

Chlorella biomass

4.7

5.3

0

19

0

0

0

0

0

0

0

0

0

Chlorophyte size 2 density

0

0

0

20,000

0

0

30,000

0

0

0

0

0

0

Chlorophyte size 2 biomass

0

0

0

20

0

0

31

0

0

0

0

0

0

Chlorophyte size 3 density

0

40,000

0

0

0

0

0

10,000

10,000

0

40,000

0

0

Chlorophyte size 3 biomass

0

100

0

0

0

0

0

26

26

0

100

0

0

Chlorophyte size 4 density

350,000

300,000

0

310,000

0

0

0

0

0

0

0

0

0

Chlorophyte size 4 biomass

120

100

0

110

0

0

0

0

0

0

0

0

0

Chlorophyte size 6 density

0

0

0

0

0

0

0

0

0

0

130,000

0

0

Chlorophyte size 6 biomass

0

0

0

0

0

0

0

0

0

0

20

0

0

Chlorococcales density

0

0

0

0

0

0

0

0

0

0

0

110,000

0

Chlorococcales biomass

0

0

0

0

0

0

0

0

0

0

0

29

0

Closterium density

0

0

0

0

0

0

0

0

0

0

0

10,000

0

Closterium biomass

0

0

0

0

0

0

0

0

0

0

0

60

0

Coelastrum density

0

0

0

0

0

0

0

0

0

0

70,000

0

0

Coelastrum biomass

0

0

0

0

0

0

0

0

0

0

4.6

0

0

Cosmarium density

0

10,000

0

0

0

0

0

0

20,000

0

0

0

0

Cosmarium biomass

0

150

0

0

0

0

0

0

290

0

0

0

0

Dictyosphaerium density

0

0

0

0

0

0

0

0

0

0

70,000

0

0

Dictyopshaerium biomass

0

0

0

0

0

0

0

0

0

0

19

0

0

Oocystis size 1 density

40,000

0

0

0

90,000

0

0

0

80,000

0

0

0

0

Oocystis size 1 biomass

4.6

0

0

0

10

0

0

0

9.1

0

0

0

0

Oocystis size 2 density

0

0

0

0

20,000

0

0

0

0

0

0

0

40,000

Oocystis size 2 biomass

0

0

0

0

40

0

0

0

0

0

0

0

80

Pandorina density

0

0

0

0

0

120,000

0

0

0

0

0

0

0

Pandorina biomass

0

0

0

0

0

14

0

0

0

0

0

0

0

Quadrigula density

0

0

0

0

0

0

0

0

0

0

50,000

0

0

Quadrigula biomass

0

0

0

0

0

0

0

0

0

0

34

0

0

Sphaerocystis density

0

0

0

0

0

0

80,000

0

80,000

0

0

0

0

Sphaerocystis biomass

0

0

0

0

0

0

5.2

0

5.2

0

0

0

0

Spondylosium density

80,000

0

0

0

0

0

0

0

0

0

0

0

0

Spondylosium biomass

170

0

0

0

0

0

0

0

0

0

0

0

0

Staurastrum density

0

0

0

0

0

0

0

0

0

10,000

0

10,000

0

Staurastrum biomass

0

0

0

0

0

0

0

0

0

390

0

390

0

Cryptophyta

                         

Campylomonas reflexa density

0

0

0

0

0

20,000

20,000

50,000

0

10,000

20,000

10,000

0

Campylomonas reflexa biomass

0

0

0

0

0

19

19

48

0

9.5

19

9.5

0

Campylomonas rostratiformis density

0

0

0

0

0

0

0

0

0

0

0

40,000

0

Campylomonas rostratiformis biomass

0

0

0

0

0

0

0

0

0

0

0

76

0

Cryptophyte size 1 density

20,000

0

0

0

0

0

0

0

0

0

0

0

0

Cryptophyte size 1 biomass

13

0

0

0

0

0

0

0

0

0

0

0

0

Cryptophyte size 3 density

0

0

0

0

0

0

0

0

0

0

0

0

10,000

Cryptophyte size 3 biomass

0

0

0

0

0

0

0

0

0

0

0

0

2.1

Cryptophyte size 4 density

0

0

0

10,000

0

0

0

0

0

0

0

0

0

Cryptophyte size 4 biomass

0

0

0

2.7

0

0

0

0

0

0

0

0

0

Cryptomonas density

0

0

0

0

0

0

0

0

0

30,000

0

0

10,000

Cryptomonas biomass

0

0

0

0

0

0

0

0

0

50

0

0

17

Katablepharis density

0

0

0

0

0

50,000

50,000

220,000

40,000

20,000

60,000

90,000

10,000

Katablepharis biomass

0

0

0

0

0

8.6

8.6

38

6.9

3.4

10

15

1.7

Plagioselmis density

0

0

0

0

0

180,000

60,000

20,000

0

10,000

10,000

40,000

20,000

Plagioselmis biomass

0

0

0

0

0

28

9.4

3.1

0

1.6

1.6

6.3

3.1

Cyanophyta

                       

 

Anabaena density

0

0

0

0

29,127,000

16,706,000

550,000

6,300,000

0

12,000

620,000

480,000

630,000

Anabaena biomass

0

0

0

0

18,000

10,000

330

3,800

0

7.3

380

290

380

Aphanothece density

0

0

0

0

0

0

0

0

0

3,780,000

480,000

3,250,000

500,000

Aphanothece biomass

0

0

0

0

0

0

0

0

0

5.9

0.8

5.1

0.8

Cyanophyte size 1 density

0

0

0

0

0

0

0

0

0

0

4,500,000

0

0

Cyanophyte size 1 biomass

0

0

0

0

0

0

0

0

0

0

8.0

0

0

Gomphosphaeria density

0

0

0

0

0

0

1,500,000

0

0

15,020,000

9,800,000

2,500,000

8,000,000

Gomphosphaeria biomass

0

0

0

0

0

0

21

0

0

210

140

35

110

Microcystis density

0

0

0

0

0

0

0

0

3,313,000

0

0

0

0

Microcystis biomass

0

0

0

0

0

0

0

0

47

0

0

0

0

Bacillariophyta

                         

Achnanthes density

160,000

0

0

0

0

0

0

0

0

0

0

0

0

Achnanthes biomass

64

0

0

0

0

0

0

0

0

0

0

0

0

Centrales size 1
density

0

0

0

0

0

0

0

80,000

0

0

0

400,000

0

Centrales size 1 biomass

0

0

0

0

0

0

0

92

0

0

0

460

0

Centrales size 2 density

1,060,000

650,000

80,000

600,000

0

0

0

0

0

0

0

0

0

Centrales size 2 biomass

2,100

1,300

160

1,200

0

0

0

0

0

0

0

0

0

Centrales size 3 density

0

0

10,000

0

0

0

0

0

0

0

0

0

0

Centrales size 3 biomass

0

0

170

0

0

0

0

0

0

0

0

0

0

Cyclotella density

0

0

0

0

230,000

0

0

0

120,000

550,000

0

0

270,000

Cyclotella biomass

0

0

0

0

270

0

0

0

140

650

0

0

320

Fragilaria density

4,490,000

3,630,000

1,130,000

2,490,000

810,000

710,000

830,000

590,000

1,030,000

690,000

1,230,000

550,000

150,000

Fragilaria biomass

6,500

5,300

1,600

3,600

1,200

1,000

1,200

860

1,500

1,000

1,800

800

220

Melosira density

0

0

0

0

40,000

0

110,000

0

0

0

0

0

0

Melosira biomass

0

0

0

0

33

0

90

0

0

0

0

0

0

Pennales size 3 density

0

0

10,000

0

0

0

0

0

0

0

0

0

0

Pennales size 3 biomass

0

0

9.8

0

0

0

0

0

0

0

0

0

0

Stephanodiscus density

0

0

0

0

0

240,000

80,000

20,000

0

0

1,120,000

0

0

Stephanodiscus biomass

0

0

0

0

0

790

260

66

0

0

3,700

0

0

Pyrrophyta

                         

Ceratium density

0

0

0

0

0

0

0

20,000

0

0

0

0

10,000

Ceratium biomass

0

0

0

0

0

0

0

0.8

0

0

0

0

0.4

Euglenophyta

                         

Trachelomonas size 1 density

0

0

0

0

0

0

0

0

0

0

0

0

20,000

Trachelomonas size 1 biomass

0

0

0

0

0

0

0

0

0

0

0

0

51

Trachelomonas size 2 density

0

0

0

0

0

0

0

0

0

20,000

0

0

0

Trachelomonas size 2 biomass

0

0

0

0

0

0

0

0

0

83

0

0

0

Colorless Flagellates

                         

Flagellate size 1 density

0

0

0

0

0

60,000

0

0

0

0

0

0

0

Flagellate size 1 biomass

0

0

0

0

0

9.0

0

0

0

0

0

0

0

Flagellate size 2 density

0

0

0

0

0

10,000

20,000

0

0

0

0

0

0

Flagellate size 2 biomass

0

0

0

0

0

4.2

8.4

0

0

0

0

0

0

Flagellate size 3 density

0

0

0

0

10,000

0

0

0

1,270,000

0

0

20,000

20,000

Flagellate size 3 biomass

0

0

0

0

1.1

0

0

0

140

0

0

2.3

2.3

Flagellate size 4 density

0

0

0

0

0

0

0

0

0

0

0

30,000

0

Flagellate size 4 biomass

0

0

0

0

0

0

0

0

0

0

0

0.03

0

Flagellate size 5 density

0

0

0

0

0

0

0

0

0

0

0

0

40,000

Flagellate size 5 biomass

0

0

0

0

0

0

0

0

0

0

0

0

28

Ciliates

                       

 

Ciliate size 2 density

0

0

0

0

0

0

0

10,000

0

0

10,000

0

0

Ciliate size 2 biomass

0

0

0

0

0

0

0

42

0

0

42

0

0

Ciliate size 4 density

0

0

0

0

0

0

0

0

0

10,000

30,000

0

0

Ciliate size 4 biomass

0

0

0

0

0

0

0

0

0

210

630

0

0

Ciliate size 7 density

0

0

0

0

0

0

0

0

0

0

0

0

20,000

Ciliate size 7 biomass

0

0

0

0

0

0

0

0

0

0

0

0

450

Rotifers

rotifer size 1 density

0

0

0

0

10,000

0

0

0

0

0

0

0

0

rotifer size 1 biomass

0

0

0

0

230

0

0

0

0

0

0

0

0

Ameba

 

Ameba density

0

0

0

0

0

10,000

10,000

0

0

0

0

0

0

Ameba biomass

0

0

0

0

0

3.8

3.8

0

0

0

0

0

0

Go back to Appendix B